Yes, you can set up CNAMEs to brand URLs that your email subscribers may see. Configure up to 4 to brand URLs: Link tracking, Assets, Landing Pages, and Forms
You may have noticed that when you view the online version of a sent email, or visit a hosted form or landing page, that the browser address bar contains a non-descriptive URL (seen below).
This is a standard URL generated through multiple merged parameters to identify your account, content file, etc. If you prefer to control the domain seen in these instances, we offer the ability to create branded URLs in your account.
You will find this functionality is Settings > Account Management > CName Setup. This is a self service process that requires a few steps inside your account to generate instructions for your IT team. When your IT team completes the steps in the generated instructions, return to your account to "authenticate" each URL configured.
See this related article for details on setting up CNAMEs.